RT Journal Article SR Electronic T1 Canada's programs to prevent mental health problems in children: the research–practice gap JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1069 OP 1071 DO 10.1503/cmaj.1030676 VO 171 IS 9 A1 John D. McLennan A1 Harriet L. MacMillan A1 Ellen Jamieson YR 2004 UL http://www.cmaj.ca/content/171/9/1069.abstract